#plate{
    width: 100vw;
    height: 100vh;
    background-color: aqua;
    display: flex;
    flex-flow: row wrap;
    overflow: hidden;
    justify-content: flex-start;
    align-items: flex-start;
    align-content: flex-start;
}
.rowDiv{
    width: 100vw;
    display: flex;
    flex-flow: row nowrap;
}